Twenty fattened gilts aged about 170 days and weighing 90-100 kg were used in a 14-days feeding experiment (4 groups of 5 animals). Gilts of all groups were offered 3 kg of balanced feed daily. Feed used for control group (C) was free from ochratoxin A (OTA) and from mycotoxins ZEN, AFT, DON,while that for all experimental groups (E1, E2, E3) contained 32,2 μg naturally ocurring OTA/kg.Feed used for group E1 contained an additive of 0.3 kg activated charcoal while that for group E2 – 0.125 kg aluminosilicate/100 kg. Feed used for E3 group contained no OTA-inactivating agents.The post-slaughter laboratory analyses were done of blood serum, kidney, liver and longissimus dorsi muscle. All E groups showed similar concentrations of OTA in the examined tissues. Concentration of 32.2 μg OTA/kg feed offered led neither to disease in gilts nor to increase of the creatinine and urea nitrogen level in their blood sera. Both adsorbents did not lead to decrease in micro- and macroelements in the sera of gilts. It is concluded that adsorption of OTA was not effective in its inactivation when adsorbents were used in the applied dozes.